package com.scienjus.config;

import com.alibaba.druid.pool.DruidDataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

import javax.sql.DataSource;
import java.sql.SQLException;

/**
 * Created by MәӧωρaЯsε on 2017/5/6.
 *
 */
@Configuration
public class DruidDBConfig {


        private Logger logger = LoggerFactory.getLogger(DruidDBConfig.class);

        @Value("${spring.datasource.url}")
        private String dbUrl;

        @Value("${spring.datasource.username}")
        private String username;

        @Value("${spring.datasource.password}")
        private String password;

        @Value("${spring.datasource.driverClassName}")
        private String driverClassName;

        @Value("${spring.datasource.initialSize}")
        private int initialSize;

        @Value("${spring.datasource.minIdle}")
        private int minIdle;

        @Value("${spring.datasource.maxActive}")
        private int maxActive;

        @Value("${spring.datasource.maxWait}")
        private int maxWait;

        @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
        private int timeBetweenEvictionRunsMillis;

        @Value("${spring.datasource.minEvictableIdleTimeMillis}")
        private int minEvictableIdleTimeMillis;

        @Value("${spring.datasource.validationQuery}")
        private String validationQuery;

        @Value("${spring.datasource.testWhileIdle}")
        private boolean testWhileIdle;

        @Value("${spring.datasource.testOnBorrow}")
        private boolean testOnBorrow;

        @Value("${spring.datasource.testOnReturn}")
        private boolean testOnReturn;

        @Value("${spring.datasource.poolPreparedStatements}")
        private boolean poolPreparedStatements;

        @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
        private int maxPoolPreparedStatementPerConnectionSize;

        @Value("${spring.datasource.filters}")
        private String filters;

        @Value("${spring.datasource.connectionProperties}")
        private String connectionProperties;

        @Bean     //声明其为Bean实例
        @Primary  //在同样的DataSource中，首先使用被标注的DataSource
        public DataSource dataSource(){
            DruidDataSource datasource = new DruidDataSource();

            datasource.setUrl(this.dbUrl);
            datasource.setUsername(username);
            datasource.setPassword(password);
            datasource.setDriverClassName(driverClassName);

            //configuration
            datasource.setInitialSize(initialSize);
            datasource.setMinIdle(minIdle);
            datasource.setMaxActive(maxActive);
            datasource.setMaxWait(maxWait);
            datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
            datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
            datasource.setValidationQuery(validationQuery);
            datasource.setTestWhileIdle(testWhileIdle);
            datasource.setTestOnBorrow(testOnBorrow);
            datasource.setTestOnReturn(testOnReturn);
            datasource.setPoolPreparedStatements(poolPreparedStatements);
            datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
            try {
                datasource.setFilters(filters);
            } catch (SQLException e) {
                logger.error("druid configuration initialization filter", e);
            }
            datasource.setConnectionProperties(connectionProperties);

            return datasource;
        }
}
